package wzh;
public class wzh5209 {
public static void main(String args[]){
        Student stu=new Student(5209);
        stu.speak();
        System.out.println("主类的包名也是wzh");
        }
        }

class Student{
    int number;
    Student(int n){
        number=n;
    }
    void speak(){
        System.out.println("Student类的包名是wzh,我的学号："+number);
    }
}